baber/WOPTO huggingface dataset:
Patent GB-1195449-A (GB)
Title: Elastic Exhaust Cap
IPC: F16D65/22
Filed: 1968-11-28
Abstract: 1,195,449. Valves; pipe caps. JACOBS MFG. CO. 28 Nov., 1968 [27 Feb., 1968], No. 56471/68. Headings F2P and F2V. An elastic cap 10 for a pressure gas exhaust tube 12, comprises a skirt 16 having a thickened part 21 extending rearwardly from an open end, a flexible thinner part 25 continuing from the part 21, a cup section 28 disposed coaxially with the skirt having a stiff disc portion normal to the axis of the skirt and a coned flexible wall portion 26 connecting with the skirt part 25, and a plurality of slits 15 extending into the parts 25 and 26. The cap is made from rubber and is fitted over the end of an air exhaust tube 12 extending from a valve 14, so as to be flexed by air pressure to lift the disc portion from the end of the tube and open the slits 15. In the absence of air pressure, the cap closes to prevent foreign matter from entering the tube.
Patent GB-1376919-A (GB)
Title: Process for accurate electrochemical machining of workpieces
IPC: B23H3/04
Filed: 1971-12-06
Abstract: 1376919 Electrolytically machining inclined surfaces VUMA VYSKUMNY USTAV MECHANIZACIE A AUTOMATIZACIE 6 Dec 1971 [8 Dec 1970] 56623/71 Heading C7B In a process for accurate electrolytic machining of workpieces so as to form surfaces inclined with respect to the direction of relative advance between a working electrode and the workpiece, the voltage, conductivity of the electrolyte, active working area of the tool for the inclined surfaces is different from that pertaining to the surfaces perpendicular to the direction of relative advance. To reduce the working voltage locally the inclined surfaces may be electrically insulated from the rest of the workpiece and may have individual voltage sources or may take current from the main source via electrical resistors. The time of machining may be controlled if the inclined surfaces are connected to the main source via a time switch. The active working area of the inclined surfaces may be reduced by strips of polyethylene. The conductivity of the electrolyte in the vicinity of the inclined surfaces may be reduced by applying compressed air to the electrolyte. The rate of flow Q 2  of liquid electrolyte to the rate of flow of air Q 1  may be:- (where α is the angle of inclination of the surface). Electrolyte is passed down channel 6 in working electrode 1 to reach working gap 7. Compressed air is introduced through inlet 8.
Patent GB-1196717-A (GB)
Title: Improvements relating to Electromechanical Band-Pass Filters.
Inventor: ARLEEVSKAYA NATALIA YAKOVLEVNA
IPC: H03H9/50
Filed: 1968-11-29
Abstract: 1,196,717. Electromechanical filters. N. Y. ARLEEVSKAYA. 29 Nov., 1968, No. 56654/68. Heading H3U. A ladder type parallel filter comprises a number of resonators 1, 2 each consisting of a dumb-bell portion 3, Fig. 4, bonded in an aperture in plate-shaped portion 4, Fig. 6. Lugs 6 on the portions 4 are connected by wire links 5. The dumb-bell portions 3 of the end resonators 2 serve as transducers and are made of ferrite. In a modification (Fig. 2, not shown) the portions 4 are integral with each other and are connected by centrally disposed narrow necks which take the place of the wires 5.
Patent GB-1215589-A (GB)
Title: Laminated, reinforced carbon articles
IPC: D04H5/02
Filed: 1967-12-13
Abstract: 1,215,589. Laminated carbon fibre article. CARBORUNDUM CO. 13 Dec., 1967 [13 Dec., 1966], No. 56749/67. Heading B5N. [Also in Division C1] A laminated article is formed by superposing a number of layers of carbon fibres, needling the stack of layers to provide interlaminar reinforcing fibrous portions, impregnating the stack with a carbonizable binder, and curing and carbonizing the binder at elevated temperatures. The layers may be of woven cloth. The reinforcing fibrous portions may be sheared out of each layer to enter adjacent layers or a number of separate chopped fibres may be spread over the stack and then needled into the stack. The reinforcing fibres may be perpendicular to the plane of the layers or at some other angle to this plane. The article may be produced by needling a number of layers and then repeatedly adding and needling more layers to the already needled layers. The binder may be liquid furfuryl alcohol polymer catalysed with 5% maleic anhydride. The stack may be compressed to remove excess binder before curing and carbonizing. The latter step may be effected at 800 C. in an atmosphere of nitrogen.
Patent GB-1262000-A (GB)
Title: A semiconductor device and a method for manufacturing the same
Inventor: SHIBATA KEIZO
IPC: H01L23/485
Filed: 1969-11-21
Abstract: 1,262,000. Semi-conductor device. TOKYO SHIBAURA ELECTRIC CO. Ltd. 21 Nov., 1969 [22 Nov., 1968], No. 57045/69. Heading H1K. Insulation between a first electrode layer 5 overlying a first region 4 of one conductivity type, and a second electrode layer 10 making contact to a plurality of further regions 9, of the opposite conductivity type, is achieved by using an insulating layer 6 between the electrodes, and the second electrode where it contacts the regions 9, through the first electrode, being surrounded by a void space formed from an aperture 8 in the first electrode. In a transistor embodiment the aperture in the first electrode may be formed by overetching, following the formation of holes in the insulation layer by photoresist and etching techniques. The further regions, 9, may be formed by diffusion or ion bombardment. The electrodes may be of aluminium, molybdenum or platinum. In an alternative embodiment, an F.E.T. comprises a first, grid-shaped, region embedded in a substrate below an epitaxial layer of substrate conductivity type. A second region of first region conductivity type, is formed in the epitaxial layer via holes in both the first electrode and overlying insulation film, so as to contact parts of the first region, and form the gate region of the device. The second electrode contacts the gate region, the first electrode forming the source electrode.
Patent GB-1294320-A (GB)
Title: Fabrication of mineral slabs with a plastics surfaces finish
Inventor: MILSIMER F
IPC: C08J5/04
Filed: 1969-11-25
Abstract: 1294320 Laminates INTERNATIONAL PATENT DEVELOPMENT CORP 25 Nov 1969 [26 Nov 1968] 57647/69 Heading B5N [Also in Division C3] Hard mineral fibre slabs with a plastics surface finish are produced by impregnating paper with an aqueous alcoholic solution containing a phenolformaldehyde resin, stearine, hexamethylenetetramine and a wetting agent and pressing it on to a web of resin impregnated mineral fibres. The solution with which the paper, which may be printed or unprinted, is impregnated may be prepared by dissolving in alcohol a phenolformaldehyde resin, and adding thereto an alcoholic solution of stearine and an aqueous solution of hexamethylenetetramine and a wetting agent, e.g. a condensation product of coconut oil fatty acids with diethanolamine. The impregnated paper may be dried at 80-110 C. before pressing. The mineral fibres used to make the web may be prepared by subjecting molten slag to a plurality of rollers having progressively increasing angular velocities, the fibres produced being driven by a flow of air from the fibre making equipment into a sedimentation chamber where they are impregnated with resin in fluid or powder form and deposited on to a moving continuous chain transporter with a negative pressure arranged underneath it so that even felting of the fibres is obtained. The web may be pre-dried to remove water from the aqueous solution of the resin and placed on a printed paper sheet impregnated with the phenolformaldehyde resin solution lying on a stainless steel sheet and if desired a second paper sheet impregnated with phenol-formaldehyde resin placed on top of the web with another stainless steel sheet mounted thereon. The slab may then be placed into a press where a pressure of 2-5 Kp./cm.<SP>2</SP> and a temperature of 80-110 C. are applied.
Patent GB-1375420-A (GB)
IPC: A24B3/18
Filed: 1971-12-13
Abstract: 1375420 Puffing tobacco PHILIP MORRIS Inc 13 Dec 1971 [21 Dec 1970] 57773/71 Heading A2C Tobacco is impregnated with from 1% to 40% by weight, based on the dry weight of the tobacco, of nitrous oxide in gaseous or liquid form and the impregnated tobacco is submitted to conditions under which it puffs, e.g. heat and/or reduced pressure, preferably by exposing it to a stream of a heated air/ steam mixture.
Patent GB-1455289-A (GB)
Title: Method and device for coating a perforated cylindrical stencil
IPC: B05C3/00
Filed: 1973-12-13
Abstract: 1455289 Coating apparatus STORK AMSTERDAM BV 13 Dec 1973 [15 Dec 1972] 57782/73 Heading B2L Apparatus, for coating a vertical stencil 2 or perforated cylinder, comprises supports 1 and an annular coating substance container 3 closed at the bottom by a radial wall 4 and movable vertically relatively to a cylinder. As shown the container 3 is mounted on threaded rods 7 which are rotated by a motor 8 and transmission means 9 to move the container downwards at between 0.1 and 2 cm per sec, the coating being dried by a heater 10 on the container, by passing a current through the cylinder which acts as a resistance heater by high frequency heating. The coating substance is chosen to have a surface tension such as not to pass through the cylinder perforations.
Patent GB-1390720-A (GB)
Title: Metallised film capacitors
IPC: H01G4/224
Filed: 1973-12-17
Abstract: 1390720 Capacitors PYE Ltd 17 Dec 1973 68378/73 Heading HIM Substantially cup-shaped insulators 8, 9 prevent electrical contact between capacitor can 3 and the metallized contact surfaces at either end of wound metallized film capacitor 1, insulator 9 having a resilient portion 10 extending axially away from its associated end-face to such an extent that when can 3 is closed by terminalcarrying plate 12, portion 10 is deflected or compressed to hold the capacitor roll in place. The insulator with the extension may alternatively be at the bottom end of the rod.
Patent GB-1201395-A (GB)
Title: Foundry moulds and cores
Inventor: BODDEY RONALD FREDERICK
IPC: C08G18/38
Filed: 1967-12-22
Abstract: 1,201,395. Foundry moulds and cores. CONTEKI DEVELOPMENTS Ltd. 20 Dec., 1968 [22 Dec., 1967], No. 58430/67. Heading B5A. [Also in Division C3] Foundry moulds or cores are made by locating within a closed container, the whole or part of which is to constitute the pattern for the mould or core, a composition comprising a finelydivided refractory material and a thermosettable or chemically hardenable, foamable resin composition and allowing or causing the composition to foam and become partially or fully set within the container. The resin composition may comprise a phenolformaldehyde, ureaformaldehyde, melamine formaldehyde, furan, alkyd or epoxy resin or a resin prepared by reacting an aqueous solution of an alkali metal silicate with an isocyanate or isothiocyanate. Suitable refractory materials are foundry sand, alumina, magnesia, chromite sand, chamotte, dolomite or a refractory silicate. The blowing agent may be azo bisisobutyrylnitrile, trichlorofluoromethane or other fluorohydrocarbon or may be generated in the resin forming reaction. It is preferred to coat the walls of the container in contact with the reaction mixture with an antifoaming agent. In the case where the resin is formed from the aqueous solution of alkali-metal silicate and isocyanate it is preferred to add a catalyst such as a tertiary amine or metal compound to the reaction mixture. In a specific example a mixture of fine sand, sodium silicate solution, diphenylmethane - 4,4<SP>1</SP> - diisocyanate, a mixture of dimethylaminoethanol and tetramethylene diamine trichlorofluoromethane and silicone foam stabilizer is poured into a closable moulding box, the pattern faces of which are coated with a silicone antifoaming agent, to form a product in which the surfaces contacting the walls of the container are formed as a rigid solid (virtually all sand) and the remainder, more remote from the walls is in the form of a foam of low density.
Patent GB-1198090-A (GB)
Title: Nuclear Reactor Containment System
IPC: G21C9/012
Filed: 1967-12-28
Abstract: 1,198,090. Reactors. COMBUSTION ENG. Inc. 28 Dec., 1967 [29 Dec., 1966], No. 58877/67. Heading G6C. An arrangement for the removal of steam arising from the rupture of the pressure vessel 10 of a water-cooled reactor disposed in shielding 14 within a containment 12, comprises connecting the space within the containment to one or more condensers 16 through pipes 18 and normally-open valves 20, the condensers having spray nozzles 26 connected through a normally-closed valve 30 to a water storage tank 24. Should the vessel 10 burst the rise in pressure in containment 12 causes automatic opening of the valve 30 to condense steam entering the condensers 16. The condensate may return to the pressure vessel through the pipes 18 or may be removed through pipes 34. The atmosphere in the containment 12 is circulated through a valve 38, pump 36, refrigerator 47, filtering means 40, pipe 42 and valve 44. When the radioactivity of this atmosphere has sufficiently decreased as detected by monitors 48, the atmosphere is discharged through a stack by opening valve 46 and closing valve 44.
Patent GB-1298937-A (GB)
Title: Improvements in or relating to clips for supporting cables or other objects
Inventor: PARKINSON GORDON FREDERIC
IPC: F16L3/08
Filed: 1968-12-12
Abstract: 1298937 Brackets G F PARKINSON 12 Dec 1969 [12 Dec 1968] 59142/68 Heading A4B [Also in Division E2] A plastics clip for securing cables &c. to a wall has a resilient pad D attached to its larger limb A, this pad having a pressure-sensitive adhesive coating E by which it may be stuck to the wall. The pad may be of polyvinylchloride or urethane foam, the clip of PVC, and the adhesive of polyvinyl ethyl ether or an acrylic co-polymer.
Patent GB-1276100-A (GB)
Title: Bladed member for a fluid flow machine
Inventor: PALFREYMAN JACK
IPC: F01D5/22
Filed: 1968-12-16
Abstract: 1276100 Turbomachine blades ROLLSROYCE Ltd 25 Nov 1969 [16 Dec 1968] 59739/68 Heading FIT Blades 23, e. g. for a compressor of a gas turbine engine, are mounted on a rotor or stator 16 by engagement of generally cylindrical root portions 21 within corresponding recesses 20 with freedom for pivotal movement, the root portions 21 having extensions 24 engaging resilient means. The latter comprises elastomeric balls 25 or inflatable members 26. Relative axial movement between adjacent baldes 23 is prevented by telescopically engaging clapper-like members 30, 31. Pressure fluid may be supplied to a space within the members 30, 31 so as to urge them apart. In a modification each blade aerofoil is not integral with its root portion 21 but is joined thereto by a dovetail connection.
Patent GB-1444110-A (GB)
Title: Oxygen-permeable contact lens composition
IPC: C08F230/08
Filed: 1973-12-28
Abstract: 1444110 Silicon - containing copolymers POLYCON LABORATORIES Inc 28 Dec 1973 60058/73 Headings C3P and C3S [Also in Division G2] Copolymers suitable for contact lenses are formed from 10-60 parts of a compound of the formula in which X and Y are C 1 -C 5  alkyl, phenyl or Z-, Z- is of the formula A is C 1 -C 5  alkyl or phenyl, R is methyl or hydrogen, m is 1-5 and n is 1-3 and 90-40 parts of a C 1 -C 20  alkyl (meth)acrylate. Other monomers may be added to increase the hydrophilic properties, e.g. hydroxyethyl methacrylate, or as cross-linking agents, e.g. ethylene glycol dimethacrylate. Pentamethyl disiloxanyl methyl methacrylate is prepared by reacting pentamethylchloromethyldisiloxane with methacrylic acid in the presence of triethylamine; tris(trimethylsiloxy)methacrylatopropylsilane is prepared by reacting trimethoxy methacrylatopropylsilane with trimethyl acetoxysilane in the presence of ethylsulphuric acid.
Patent GB-1253399-A (GB)
Title: A time division multiplex communication system
Inventor: SABURI AKIO
IPC: H04B7/15
Filed: 1969-12-09
Abstract: 1,253,399. Multiplex pulse code signalling. NIPPON ELECTRIC CO. Ltd. 9 Dec., 1969 [10 Dec., 1968], No. 60097/69. Heading H4L. An arrangement for transferring information transmitted by one of a number of stations in a TDM satellite communication system from one channel to a previously idle channel includes an arrangement for temporary transmission in duplicate on both channels to allow time for updating by a receiver of the recorded channel designations, the transmission on the original channel then being discontinued. As shown in Fig. 1 in which the additional units required by the invention are shown in double-line blocks, channel position timing signals 53 for burst Bi, derived from clock 43, are passed to a sampling pulse generator 55 where they are compared with identifying signals of busy channels held in registers 31, &c. to produce sampling pulses for the multiplexer unit 11, the modulation and transmission then being controlled by units 19, 23, 27 and 29. When a channel change is required, processor 33 which receives signals from 31 indicating idle channels assigns a new channel number, and the old and new numbers are loaded into 136, the old number also being registered in 135. Comparators 141, 142 receive channel signals from timing circuit 41 and produce signals 147, 148 at the old and new channel times. The new channel position is transferred via 169 into the channel specifier 31 and hence the output of 19 for the data is transferred to the new channel. At the same time it is loaded into register 159 by a signal from 142 and subsequently read out at the " old " channel time by a signal on 147. The receiving circuits (Fig. 4, not shown) are also supplied with the new channel designation from 33 and act on receipt of data on this channel to transmit to 33 an order for cancellation of the cancellation of the contents of 135 over line 131. This prevents further read-out from 159 at the " old " channel time.
Patent GB-1308799-A (GB)
Title: Hydraulic steering system
IPC: B62D5/09
Filed: 1970-12-21
Abstract: 1308799 Power-assisted steering ROBERT BOSCH GmbH 21 Dec 1970 [6 Feb 1970] 60655/70 Heading B7H In an hydraulic steering system fluid is supplied to a steering cylinder 39 from a control pump 13 via a slide valve 5 and to an auxiliary steering cylinder 61 from a feed pump 1 via slide valve 46, the arrangement allowing a smaller volume control pump 13 than usual to be used. With the valves 5, 46 in the neutral position shown, no pressure fluid is supplied to either pump 13 or auxiliary cylinder 61, and on slight movement of the spindle 16 fluid is pumped from pump chamber 11 or 12 by piston 14 through lines 9 or 10 and 36 or 35 to chamber 38 or 37 of the steering cylinder 39. On large rotation of the steering column, e.g. to move the piston 14 to the left, the pressure increase in chamber 11, line 9 and a line 29 and valve control chamber 31 connected thereto moves valve 5 to the right. In this position pressure fluid is supplied via lines 3 and 10 to pump chamber 12, and communication between chamber 11 and steering chamber 38 is maintained, however, the connection between the chamber 12 and steering chamber 37 is broken and the steering chamber 37 is connected via line 35, valve 5 and line 44 to a return line 6. Fluid from chamber 11 passing through line 36 to the steering chamber 38 acts via a branch line 52 on a control chamber 48 of slide valve 46 to move it to the left thus connecting via lines 45 and 58 the auxiliary steering chamber 60 to the supply line 3. Fluid supplied to the pump chamber 12 via line 10 also acts through line 30 on control chamber 32 of the valve 5 so that the valve 5 is returned to the' neutral position, and on re-connection of lines 10 and 35 control chamber 47 acts on valve 46 to return it to its neutral position in which the auxiliary steering chambers 59, 60 are interconnected. If the wheels experience impacts so that the pressure is raised, for example, in steering and auxiliary chambers 37, 59 the increase in pressure in lines 35, 10 and 30 causes movement of the valves 5, 46 to allow fluid to be supplied in opposition to the impact faces. In another embodiment (Fig. 2, not shown) only one slide control valve (70) is provided, a first part of which corresponds exactly to slide valve 5 and a second part of which fulfills the function of the slide valve 46.
Patent GB-1181050-A (GB)
Title: Tube Annealing Apparatus
IPC: C21D1/40
Filed: 1968-12-23
Abstract: 1,181,050. Heating tubing by passage of current. CALUMET & HECLA CORP. 23 Dec., 1968 [19 Feb., 1968], No. 61008/68. Heading H5H. [Also in Division C6] Tubes are annealed by passage between a pair of electrical contact wheels 14 and 16, a pair of guide wheels 10 and 12 being positioned to cause the advancing tubing to be bent around both contact wheels so as to have extended contact therewith. The contact wheels, at least one of which has its peripheral portion formed of spark suppressing material, are supplied with current so as to heat the portion of tubing therebetween and the tubing is continuously advanced by rotating the wheels. As shown in Fig. 2, a contact wheel comprises a metal wheel 38 attached to a flange 40 on driving shaft 32. A contact ring 44, having a peripheral groove 46 to carry the tubing, is attached to wheel 38 by means of mounting ring 48, the other side of the wheel having a support ring 54. Heat is dissipated from the contact wheel by a water spray from nozzle 58, the water being prevented from reaching the groove 46 by a dished guide plate 60 screwed to the wheel. Current may be supplied to the wheel through the shaft 32 or through contact brushes 62 urged against mounting ring 48 by compression spring 64 the thrust of the brushes being balanced by diametrically opposite rollers 72.
Patent GB-1341029-A (GB)
Title: Measuring device
IPC: G01D5/347
Filed: 1970-12-23
Abstract: 1341029 Movement sensor DR JOHANNES HEIDENHAIN 23 Dec 1970 [23 Dec 1969 6 Nov 1970 (2)] 61208/70 Heading G4H [Also in Division G1] A movement sensor for measuring relative movement between two parts which may be exposed to extreme environmental influences includes a graduated scale, a light source, and a photo-electric detector, light being transmitted both from the source to the scale and from the scale to the detector along the same path by a light conducting cable. As described the shaft of a gas turbine engine is mounted on an air bearing 8 and carries a strip 11 of alternate light reflecting and absorbing portions to which light is carried from a remote source 13 by an optical cable 10. A beam splitter 17 transmits light from the source and the strip to respective photo-cells whose outputs are connected to a difference amplifier 23 and a Schmitt trigger 24. The trigger 27 feeds a counter 14.
Patent GB-1282570-A (GB)
Title: Improvements relating to gas blast interrupters
Inventor: ROXBURGH ALBERT
IPC: H01H33/86
Filed: 1968-12-24
Abstract: 1282570 Gas blast circuit breakers ASSOCIATED ELECTRICAL INDUSTRIES Ltd 10 March 1970 [24 Dec 1968] 61237/68 Heading H1N A gas blast circuit-breaker as described in Specification 1,282,569, the claims of which are directed to the control valve 61 having two operating positions, one of which opens the exhaust valves and the other of which closes the breaker contacts.
Patent GB-635613-A (GB)
Abstract: 635,613. Electric hot-plates. GENERAL ELECTRIC CO., Ltd., and HUMPHREYS, O. W. Jan. 3, 1947, No. 232. [Class 39 (iii)] A hot-plate comprises a metal plate 1 with one side flat to support a vessel, the other side having several integral metal, ribs 8, 18, the free edge of each rib being slotted at 12 to receive ceramic eyelets 13 through which .pass one or more helical heating resistance wires, and channel-shaped metal members 24 fit over the ribs and eyelets to hold the eyelets in the slots. The ribs may be cast in one with the plate. The channel members 24 have projections 24a engaging the ribs between the eyelets and are held by clamping strips screwed at 25 to the plate. The cylindrical eyelets 13 have side flanges, which may have flat parts 14 lying level with the top of the ribs. The plate has an extension 3 for the connections and a supply plug.